3961670860801 has 4 divisors (see below), whose sum is σ = 3967851315204. Its totient is φ = 3955490406400.

The previous prime is 3961670860781. The next prime is 3961670860879. The reversal of 3961670860801 is 1080680761693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2876008974400 + 1085661886401 = 1695880^2 + 1041951^2 .

It is a cyclic number.

It is not a de Polignac number, because 3961670860801 - 2²³ = 3961662472193 is a prime.

It is a super-3 number, since 3×3961670860801³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3961670860891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3090226240 + ... + 3090227521.

It is an arithmetic number, because the mean of its divisors is an integer number (991962828801).

Almost surely, 2^{3961670860801} is an apocalyptic number.

It is an amenable number.

3961670860801 is a deficient number, since it is larger than the sum of its proper divisors (6180454403).

3961670860801 is an equidigital number, since it uses as much as digits as its factorization.

3961670860801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6180454402.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 3961670860801 in words is "three trillion, nine hundred sixty-one billion, six hundred seventy million, eight hundred sixty thousand, eight hundred one".